CVE-2026-102596 Nango: Production flow RBAC bypass on private flow-read routes
Attackers with development access can bypass RBAC to read production integration flow metadata in Nango when RBAC is enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102596?
CVE-2026-102596 is a medium-severity missing authorization vulnerability in NangoHQ nango, published on 12 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Nango is an open-source platform for connecting agents and products to third-party APIs. Prior to 0.70.9, on accounts with RBAC enabled through a plan with has_rbac=true, two private flow-read routes, GET /api/v1/integrations/:providerConfigKey/flows and GET /api/v1/flow/:flowName, apply webAuth but omit can({ action: 'read', resource: 'flow', scopedBy: envScope }). A same-team user with the development_full_access role can therefore request env=prod and read production integration flow metadata or named flow configuration despite being denied by guarded production routes. Both controllers use res.locals.environment from the authenticated account, so the issue bypasses the production role boundary but does not cross tenant boundaries. This issue is fixed in version 0.70.9 and managed-1.5.11-0.70.8-aae30d044d7e229807d51a3957c212f3fb689e1a
Weakness: CWE-862
Which versions are affected by CVE-2026-102596?
How do I fix CVE-2026-102596?
No fix has been published for CVE-2026-102596 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-102596 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-102596 exists.
Sources
Also known as GHSA-vc5r-hj76-f35p.